Manufacture of artificial silk



Patented Dec. 11, 1934 i 1,984,303

UNITED STATES PATENT OFFICE- 1,984,303 I MANUFACTURE or ARTIFICIAL SILKGustav Hardt, Elizabethton, Tenn, assignor to American BembergCorporation, New York, N. Y., a corporation of Delaware No Drawing.Application October 4, i932,

Serial No. 636,177

7 Claims. (01. 106-40) My present invention has to do with a newprepared in the usual manner, and to this is and novel method forproducing artificial celadded, in an emulsified form, a compound of thelulosic products with a low lustre. following composition:

r re esp al y. ypr s t Invention concerns Casein 10mm (based oncellulose) o a new method for producing artificial filaments 6 whichpossess the desirable low lustre of real t t (based on cellulose) silk.oleic acid 13.00% (based on cellulose) one object of the presentinvention is to Triethanolamine 0.45% (based on cellulose) vide a novelmethod for producing a filament Example B.-A spinning solution is madeup, as

or thread of artificial silk which has greater in Example A, and to thisis added, as an emul- 10 opacity and covering power, and which possessession:

a low or dull lustre.

Other objects will become apparent from a Casfam T 1o'00% (based oncellulose) study of the following specification and claims 0181c acid(based on cellulose) Triethanolamine 0.45% (based on cellulose) In themanufacture of artificial filaments, a

cellulosic solution is prepared (cuprammonium, The solution isthoroughly mixed, in each case, Viscose, nitrocellulose or organicderivatives of fo e Spi g. cellulose), and spun or extruded into amedium Having now set forth my invention as required which tends toharden the filaments thus formed. by the patent statutes, what I desireto claim is:

My present invention has to do with a new and 1. A cellulose filament,containing a phosphor- 20 novel mixture or compound, to be added to thep acid a d triethanolamine. spinning solution before the filaments areformed, 2. A spinning solution for the manufacture of and which remainsin the filaments during the artificial products comprisingacellulosicspinning after treatment thereof. The presence of this solution, aphosphor protein, oleic acid and trisubstance in the filaments givesthem the greater ethanolamine. 25 opacity and covering power desired andrenders 3. A spinning solution for the manufacture of them lustreless.artificial products comprising a cellulosic spinning I prepare anemulsion of certain compounds solution, casein, oleic acid andtriethanolamine. and add this emulsion to the spinning solution 4. Aspinning solution for the manufacture of 3 prior to the formation offilaments therefrom. artificial products comprisingacellulosic spinningThe ingredients of my emulsion include a phossolution, a phosphorprotein, oleic acid, petrolaphorprotein such as casein, paracasein andviteltum and triethanolamine. lin. Casein is well known as the chiefnitro- 5. A spinning solution for the manufacture of genous constituentof milk, and is found disartificial products comprising a cellulosicspin- 5 solved therein in the form of a salt containing ning solution,casein, oleic acid, petrolatum and the percentage composition of aprotein with triethanolamine. approximately 0.85 percent of phosphorous.An- 6. A spinning solution for the manufacture of other of theingredients of my emulsion is petroartificial products comprising acellulose spinlatum. The two remaining constituents are oleic ningsolution, about 10% casein, about 10% oleic acid and triethanolamine,the latter having the acid and about 0.45% triethanolamine, said per- 40formula (CH2.OH.CH2)3.N. centages being based upon the cellulose contentThese constituents neednot all be used toof said spinning solution. Igether, since the petrolatum may or may not be 7. A cellulosic spinningsolution for themanupresent. I have found, however, that the presfactureof artificial products comprising a celluence of petrolatum tends toproduce a filament losic spinning solution, about 10% casein, about 45with a duller lustre. 10% petrolatum, about 13% oleic acid and about Asexamples of my new invention, the follow- 0.45% triethanolamine, saidpercentages being ing are given. All percentages are calculated basedupon the cellulose content of said spinning on the cellulose content ofthe solution. solution.

5 Example A.A cellulosic spinning solution is GUSTAV HARDI.

